Cutlery sharpener



Aprii 20, 1926. 15 1392 Ev T. DAVISON CUTLERY SHARFY'NER Filed March 19, 1.925

IN V EN TOR 8 ATTORNEY,

Patented Apr. 20, 1926.

UNITED; STATES ELWIN r. DAVISON, or ATHENIA, new JEnsnY.

CUTLERY SI-IARPENER.

Application fil'eri March 19,1925; Serial no. 18,660.

To all whom it may concern:

Be itknown that I, ELWIN T. DAVISON, a citizen of the United States, and a resident of Athenia, in the county of Passaic and State of New Jersey, have'finvented new and useful Improvements in Cutlery Sharpeners, of which the following is a specific-a tion. I I

This invention relates to devices for sharpening various. articles of cutlery and more particularly is adapted for sharpening of shears, pocket knives and table knivesand has for its principal objects the provision of a cheap, compact and efii'ectivedcv-ice for accomplishing the aforesaid purposes. 7 ll am aware that variouscutlel'y sharpener-s have been proposed where n files or abradmg do vices have been, secured in a sharpening .blockandthe configuration of the block was i i line 33 of Fig. 2; and

Fig. d is a view similar to Fi 3 but showing a different type of blade being sharpened.

struction shown therein, reference numeral 1 designates an elongated hollow body, preferably ,formed of sheet metal, which is provided with integral base flanges 2, 2' which are adapted to be secured to a suitable sup port 3 by meansof screws 1 inserted through apertures 5 and slots 5, the latter permitting of adjustment of the base members to" vary the cross-sectional area of the body 1 in order to accommodate abraslve implements of varying sizes as hereinafter referred to.

Immediately above the contracted portion of the body 1, is a portion 6 of triangular cross section throughout the entire length of the body and above this portion is a bonnet portion of substantially U-shaped cross section as designated by the reference numeral 7. An abrasive implement comprising a file or other abrasive, such as a strip ofcorundum, as designated by the reference numeral 8, is adapted to be inserted in the body portion 6 and by suitable adjustment of the base flanges, the same can be tightly secured against movement within such por tion 6 of the body. Preferably, as shown in Fig. 1, the bonnet portion 7 is provided with two" recesses having a predetermined configuration, eachhaving walls I), b which are adapted to conform to the proper angle for guiding the blade of'a pair of scissors,

so that the cutting edge 'will engage the abrasive on its upper surface at the exact angle required to produce the most effective results 111 such animplement At the bot tom of such recesses, thesidewalls of thebonnet are cut awayfto form an aperture 0 and thus prevent the OU'lZtID edge of the-implement'being sharpened from striking the walls of the implement. This aperture is" located at the terminus ofthe sloping" walls 9 or the sloping walls 9 of said recess, which walls are adapted to conform to the exact angle viz: not exceeding 45 and preferably, as shownin the drawings, considerably less than 15,Kvhich is'required to support the butt end of a knife blade (see'Fig.

3)"in a proper position so as to maintain the cutting edge of such blade in proper relation to tlre'upper surface ofthe abrasive The edges .(Z, (Z of the recesses are adapted to pro ect to i the exact point re quired to prevent alknife blade, such asy, from penetratrng into the aperture sulficient to permitits cutting edge to contact- I with the rearorvertical walls'lO, 10 of such -,lteferring to the drawingsand the con-- aperture, and at the same time such edges form the lower edge of thefaces Z), 6, which as stated, serve to guide theblade of'a pair of scissors, such as w, (see Fig. 4) and maintain the same 'inproper relation to produce an' effective cutting edge thereon in Fig. 1, although preferably in one recess" I provide an implement of corunduin for finishing the sharpening operation after the blade has been sharpened on a file inserted in the other recess 0.

The operation of my improved sharpener, I

as is evident from the foregoing description, 7 s as follows same is held in theaposition shown in Fig.

3 and rapidly drawn back and forth across the abrasive surface, then being turned over and rapidly drawn back and forth an equal number of times until the opposite edge of the blade is similarly sharpened.

This type of sharpener has among its advantages its extreme compactness and cheapness and the fact that it can accommodate abrasive implement whichvaries considerably in size, it merely being necessary, to adjust the distance of the flanges with respect to each other by loosening the screw 4 which projects intothe slot 5, and after the adjustment has been effected, such screw is then tightened, thus rigidly holding the abrasive implement within the body 6.

Preferably the body of the sharpener is formed from sheet iron of about 26 gauge, which may be copper or nickel plated if desired. The metal should not be too thick, however, as not to be yieldable as it is highly advantageous to have the body sufficiently yieldable or elastic to permit of abrasive implements of varying sizes to be inserted within and firmly held or retained by the opposing'walls of the recess ;6.

fObviously the abrasive surface may be" renewed by merely moving a fresh area thereof beneath one 'of the recesses '0' and furthermore, the abrasive implement can be turned over to expose a fresh side thereof when one side has become worn.

Having thus described my invention, what i I claim and desire to procure by United Stateslietters'latent is: V V

1. In a sharpener for cutlery, the combi nation comprisinga. body member having a chamber therein forreceiving an abrasive implement, a superstructure above said chamber, said superstructure being rigidly secured to said body member and being slotted to form a recess which has an inner rear wall and sloping entrance walls, one of which entrance walls projects substantially less than 45 with respect to the upper face of an abrasive implement when mounted in said body member and at a proper angularity to guide a knife blade against such abrasive implement in order to most effectively sharpen the same and another wall of said recess extending at an angle to the aforesaid wall and serving as a guide for the blade of a pair of scissors during the sharpening operation so as to maintain such blade at a predetermined angularity in respect to said abrasive implement and the lower edge of said wallbeing adapted to engage the side of a knife blade when thelatteris beingsharpened in said sharpener and to thereby prevent the cutting edge of said knife blade engaging a wall of said recess during the sharpening thereof.

2. In a combination sharpener for shears and knives, comprising an elongated hollow body of elastic metal having two opposing lateral members integral therewith which are adapted to be adjusted Within the elastic limits of the metal with respect to each other, an abrasive implement, snugly held 'within said body member and said body be ing provided with a superstructureintegral therewith, which superstructure is slotted so as to form'a recess which has an inner rear wall and sloping entrance walls, one of which entrance walls conforms to the angularity, and being substantially less than 45 with respect to the face of such abrasive implement when mounted in said body, which is required to guide a blade'ofa pair of shears at the proper angulari'ty with respect to the upperface of an abrasive implement held in said body and the other of which serves as'a' guide to hold a knife blade at a predetermined angularity with respect to such abrasive implement in order to obtain the most effective sharpening thereof when such knife blade or. blade of pair of shears is being drawn across such abrasive implement and the lower edge of said first mentioned entrance wall being adapted to project into the path of a knife blade held against the other wall during the sharpening operation so as to engage the upper face ofsuchknife blade and to prevent the edge thereof from striking .the said rear wall of said recess.

Signed at New Yorkin the county of day of March 1925.

ELlVIN T. DAVISON.

New York andState of New York this lSth" 

